Pith Number

pith:ZTVFJNJA

pith:2012:ZTVFJNJAMSUH25POFY5WE6SBU3

not attested not anchored not stored refs pending

SD-EQR: A New Technique To Use QR CodesTM in Cryptography

Somdip Dey

arxiv:1205.4829 v1 · 2012-05-22 · cs.CR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZTVFJNJAMSUH25POFY5WE6SBU3}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T03:55:11.553541Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccea54b52064a87d75ee2e3b627a41a6ce2fc198b2f20ac16682813de1ce8d30

Aliases

arxiv: 1205.4829 · arxiv_version: 1205.4829v1 · doi: 10.48550/arxiv.1205.4829 · pith_short_12: ZTVFJNJAMSUH · pith_short_16: ZTVFJNJAMSUH25PO · pith_short_8: ZTVFJNJA

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ZTVFJNJAMSUH25POFY5WE6SBU3 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: ccea54b52064a87d75ee2e3b627a41a6ce2fc198b2f20ac16682813de1ce8d30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32b9c4986c4cdb929782ee62212cb37fbff5ee859e8ab419607f75e070726795",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2012-05-22T07:46:15Z",
    "title_canon_sha256": "8c223fe83ec360c011c4c0f2fb68d954edaffa815ec33b484414734a4a365752"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.4829",
    "kind": "arxiv",
    "version": 1
  }
}